JEE Main Chemistry question

Which of the following combinations can be used to synthesise ethanol? **[AMU 2006, K CET 2006]**

(A) and
(B) and
(C) and
(D) and Correct

Answer: (D)

Solution

adding to formaldehyde, , gives (after hydrolysis) ethanol: CH_3MgI + HCHO \rightarrow CH_3CH_2OMgI \xrightarrow{H_3O^+} CH_3CH_2OH. with acetone gives a tertiary alcohol,

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Question ID VK-148419